﻿530 
  Seventh 
  Annual 
  Keport 
  of 
  the 
  

  

  weeding 
  out 
  the 
  healthy 
  crop 
  which 
  would 
  contest 
  its 
  possession 
  of 
  

   tbe 
  soil 
  and 
  at 
  the 
  same 
  time 
  foster 
  it 
  by 
  sowing 
  fresh 
  seed 
  of 
  the 
  

   obnoxious 
  plaiit 
  that 
  has 
  been 
  ripened 
  elsewhere. 
  If 
  it 
  were 
  not 
  

   so 
  serious 
  there 
  is 
  something 
  jx)sitively 
  ludicrous 
  in 
  a 
  legislation 
  

   which 
  is 
  ostensibly 
  iiinied 
  to 
  secure 
  the 
  restriction 
  or 
  extinction 
  of 
  

   bovine 
  tuberculosis, 
  and 
  parallel 
  with 
  this 
  a 
  positive 
  refusal 
  to 
  con- 
  

   sider 
  and 
  oppose 
  a 
  vicious 
  line 
  of 
  trade 
  by 
  which' 
  our 
  herds 
  are 
  

   being 
  filled 
  up 
  by 
  the 
  tuberculous 
  animals 
  from 
  other 
  States 
  and 
  

   culled 
  of 
  the 
  sound 
  animals 
  for 
  the 
  benefit 
  of 
  sister 
  commonwealths. 
  

  

  Tlie 
  cr^ane; 
  need 
  of 
  Xew 
  York 
  to-dav 
  is 
  a 
  measure 
  which 
  will 
  

   shut 
  out 
  these 
  streams 
  of 
  infection 
  for 
  beast 
  and 
  man 
  and 
  pave 
  

   tli-e 
  wav 
  for 
  a 
  rational 
  attack 
  on 
  the 
  infection 
  no^^ 
  resident 
  in 
  our 
  

   home 
  herds. 
  

  

  The 
  next 
  essential 
  is 
  that 
  there 
  should 
  be 
  placed 
  prominently 
  

   in 
  the 
  direction 
  of 
  such 
  work 
  one 
  or 
  more 
  experts 
  in 
  the 
  diseases 
  

   of 
  domestic 
  animals, 
  who 
  have 
  made 
  a 
  life-study 
  of 
  these 
  subjects, 
  

   and 
  who 
  will 
  biing 
  world-wide 
  knowledge 
  and 
  individual 
  skill 
  and 
  

   training 
  to 
  the 
  service 
  of 
  our 
  stock-o\vners 
  and 
  the 
  protection 
  of 
  

   the 
  public 
  health. 
  

  

  THE 
  PEEPARATIOX 
  OF 
  TUBERCULIX, 
  ITS 
  VALUE 
  AS 
  

   A 
  DIAGNOSTIC 
  AGENT 
  AND 
  REMARKS 
  ON 
  THE 
  

   HUMAN 
  AND 
  BOVINE 
  TUBERCLE 
  BACILLI. 
  

  

  By 
  Vekanus 
  A. 
  Mooee, 
  B. 
  S., 
  M. 
  D. 
  

  

  The 
  hope 
  formerly 
  entertained 
  that 
  tuberculin, 
  or, 
  more 
  cor- 
  

   rectly 
  speaking, 
  Koch's 
  old 
  tuberculin,^ 
  possessed 
  a 
  specific 
  thera- 
  

   peutic 
  value 
  has 
  been 
  dissipated 
  in 
  the 
  realization 
  of 
  the 
  fact 
  that 
  

   its 
  unquestioned 
  usefulness 
  is 
  that 
  of 
  a 
  diagnostic 
  agent. 
  While 
  

   its 
  character 
  and 
  properties 
  are 
  generally 
  understood 
  by 
  the 
  medi- 
  

  

  1 
  It 
  is 
  important 
  not 
  to 
  confound 
  the 
  old 
  tuberciilin 
  which 
  was 
  discovered 
  

   by 
  Koch 
  in 
  1890, 
  with 
  the 
  new 
  tuberculin 
  described 
  by 
  him 
  in 
  1897. 
  For 
  a 
  

   brief 
  description 
  of 
  this 
  new 
  product, 
  see 
  appendix. 
  

  

  Maragliano 
  (Berliner 
  klinische 
  Wochenschrift, 
  May 
  1, 
  1899) 
  describes 
  a 
  

   watery 
  extract 
  of 
  tubercle 
  bacilli 
  which 
  he 
  calls 
  " 
  aqueous 
  tuberculin." 
  

  

  